Project Description

Berkeley County South Carolina – Municipal Solid Waste Landfill Closure

Berkeley County South Carolina Municipal Solid Waste Landfill Closure with ClosureTurf®
Berkeley County South Carolina Municipal Solid Waste Landfill Closure with ClosureTurf®
Berkeley County South Carolina Municipal Solid Waste Landfill Closure with ClosureTurf®
Berkeley County South Carolina Municipal Solid Waste Landfill Closure with ClosureTurf®
Berkeley County South Carolina Municipal Solid Waste Landfill Closure with ClosureTurf®
  • Project: Berkeley County Landfill
  • Location: Moncks Corner, SC
  • Type: Municipal Solid Waste Landfill
  • Owner: Berkeley County
  • ClosureTurf Size: 12 acres
  • HydroTurf Size: 60,000 sq.ft.
  • Completed: 2014
  • Watch Video
  • Berkeley County Case Study

The Berkeley County MSW Landfill in Moncks Corner, South Carolina is owned and operated by Berkeley County Water & Sanitation (BCWS), and has been in operation since 1999.  It’s eight cells encompass approximately 40 acres with an estimated in-place waste volume of 1.1 million cubic yards.  When the first four cells totaling 10 acres were at capacity and ready to close, Berkeley officials turned to ClosureTurf, an EPA Subtitle D compliant landfill closure system specifically designed to eliminate soil erosion, reduce post closure maintenance costs, increase slope integrity and enhance landfill gas (LFG) management.  With major maintenance savings and the weathering of a major flood event, ClosureTurf® has proved to be worth every penny of the county’s investment.

Officials at the landfill had to address significant challenges with the closing of the site. The waste had been built too far out to the edge, leaving little room to place a two-foot traditional soil capping system.  It would have required the county to excavate excess waste and transport it to another location.  In addition, the landfill is located in an earthquake zone and an area susceptible to hurricanes and high rainfall events. In the event of seismic activity or significant rainfall, the soil used in a traditional capping system would present a significant slide hazard.

To gain approval to implement ClosureTurf, which is considered an alternative long-term cover landfill system, Berkeley County landfill officials worked closely with the South Carolina Department of Health and Environmental Control (SCDHEC).  Final cover design for the closure of Berkeley County Landfill went through a three-year approval with the SCDHEC prior to the start of construction.

Since ClosureTurf was a new technology to the state, the SCDHEC had several factors to consider for permitting; some of which included the longevity of the product, the cost benefit over a traditional system, water runoff conditions and accessibility to the areas of the cap.

Construction on the site began in April and was completed in January 2014.  The county saved an initial cost of $50,000 in construction and expects to save at least $720,000 over a 30-year period in future typical maintenance costs while reducing the environmental impact and improving safety and performance. The project marked the first large-scale implementation of this type of cover system in South Carolina.

ClosureTurf was put to the test in 2016 during a flash flooding event in the South Carolina coastal area. Berkeley County received 26 inches of rain over a couple day period.  Many areas experienced severe flooding and many of the county’s traditional soil-capped landfills were left with significant and costly erosion.  With ClosureTurf, they experienced a small amount of sand migration to the bottom of the slope but there was enough coverage of sand that it did not have to be redistributed or replaced.